Male teacher≡1
Female teacher≡2
Male student1≡3
Male student2≡4
Female student1≡5
Female student2≡6
Chimp≡7
Trainer≡8
First 7 and 8 will go. Then 8 will come back. Then 6 an 8 will go. & and 8 will come back. The 2 and 5 will go. 2 will come back, 1 and 3 will go. Then 1 will come back and 1 and 4 will go. 1 will again comeback and 1 and 2 will go. 1 comes back and 1 and 8 goes. then 8 comes back and 7 and 8 goes. So the entire group crosses the river with all the conditions satisfied.
- Astha Gupta u forgot to bring back the chimp wen u left 6 on the other side..Upvote·0· Reply ·2014-03-03 02:24:05
- Rohit Ghosh this doesn't answer the question